Low Ohmic Chip Resistors for Current Detection: UCR Series | New product new technology

Overview | Features | Applications | Lineup

Low Ohmic Chip Resistors for Current Detection: UCR Series Not susceptible to changes in ambient temperature, resulting in stable resistances in the lower range (11mΩ to 100mΩ). The industry's highest rated current 1/4W in the 1608 size 1/3W in the 2012 size

Overview

ROHM offers a lineup of low-ohmic thick-film resistors: 11mΩ to 100mΩ. The rear-mount structure reduces resistance variations during mounting.
In addition, the proprietary design significantly improves heat dissipation characteristics, resulting in superior power ratings (i.e. 1/4W in the 1608 size, 1/3W in the 2012 size) compared with conventional short-terminal products.

< External Dimensions >

Part No.	size	L	W	t
UCR01	1005	1.0	0.55	0.37
UCR03	1608	1.6	0.87	0.5
UCR10	2012	2.0	1.25	0.55
UCR18	3216	3.2	1.6	0.55

(Units : mm)

Features

Chip Resistors for Current Detection (from 11mΩ)
Rear-mount configuration minimizes resistance variations during mounting
Highest rated power in the industry
1/4W UCR03 (ROHM Conventional MCR03: 1/10W)
1/3W UCR10 (ROHM Conventional MCR10: 1/4W)
Superior resistance-temperature coefficient

Negligible resistance change at both high and low temperatures for stable operation

Applications

Current detection in PCs, mobile phones, HDDs, portable audio, power supplies, and motors, battery charge detection circuits, and the like.

Lineup

Part No.	size	Taping Specification (W)	Reel	Resistance- Temperature Coefficient (ppm/ºC)	Resistance range (Ω)	Resistance Tolerance (ºC)
UCR01MVPJ	1005	1/8 (0.125)	J (± 5%)	0 to 300	0.068 to 0.091(E24 Series)	-55 to +155
				0 to 250	0.1 to 0.2(E24 Series)
				0 to 200	0.22 to 0.91(E24 Series)
UCR01MVPF			F (± 1%)	0 to 300	0.068 to 0.091(E24 Series)
				0 to 250	0.1 to 0.2(E24 Series)
				0 to 200	0.22 to 0.91(E24 Series)
UCR03EWPJ	1608	1/4 (0.25)	J (± 5%)	0 to 250	0.020 to 0.047 (E24 Series)
UCR03EVPJ				0 to 200	0.051 to 0.091 (E24 Series)
UCR03EVPJ				0 to 150	0.1 to 0.2 (E24 Series)
UCR03EWPF			F (± 1%)	0 to 250	0.020 to 0.047 (E24 Series)
UCR03EVPF				0 to 200	0.051 to 0.091 (E24 Series)
UCR03EVPF				0 to 150	0.1 to 0.2 (E24 Series)
UCR03EVPJ		1/5 (0.2)	J (± 5%)	0 to 150	0.22 to 0.91 (E24 Series)
UCR03EVPF		1/5 (0.2)	F (± 1%)	0 to 150	0.22 to 0.91 (E24 Series)
UCR10EVHJ	2012	1/3 (0.33)	J (± 5%)	250± 200	0.011 to 0.018 (E24 Series)
				0 to 250	0.020 to 0.047 (E24 Series)
				0 to 150	0.051 to 0.1 (E24 Series)
UCR10EVHF			F (± 1%)	0 to 250	0.020 to 0.047 (E24 Series)
UCR10EVHF			F (± 1%)	0 to 150	0.051 to 0.1 (E24 Series)
UCR18EVHJ	3216	1/2 (0.5)	J (± 5%)	0 to 350	0.011 to 0.018 (E24 Series)
				0 to 200	0.020 to 0.039 (E24 Series)
				0 to 150	0.043 to 0.1 (E24 Series)
UCR18EVHF			F (± 1%)	0 to 350	0.011 to 0.018 (E24 Series)
				0 to 200	0.020 to 0.039 (E24 Series)
				0 to 150	0.043 to 0.1 (E24 Series)